Does anyone know when this camera was made?

It's a camera used by my late father-in-law; it has the 120 and Poloroid backs! Everything is with it except the manual; any ideas where to find this rare model's owner's manual?

Thanks very much in advance to the Graflex Gods!

1964. ebay.

John Craig is a good source of written information for Graflex equipment.

http://www.craigcamera.com/ib_graflex.htm